+ case 0x00: /* Physical unified memory */
+ last_from = "phys-unified";
+ last_to = "unified";
+ phys = SIM_D10V_MEMORY_UNIFIED + off;
+ if ((off % SEGMENT_SIZE) + nr_bytes > SEGMENT_SIZE)
+ nr_bytes = SEGMENT_SIZE - (off % SEGMENT_SIZE);
+ break;
+
+ case 0x01: /* Physical instruction memory */
+ last_from = "phys-insn";
+ last_to = "chip-insn";
+ phys = SIM_D10V_MEMORY_INSN + off;
+ if ((off % SEGMENT_SIZE) + nr_bytes > SEGMENT_SIZE)
+ nr_bytes = SEGMENT_SIZE - (off % SEGMENT_SIZE);
+ break;
+
+ case 0x02: /* Physical data memory segment */
+ last_from = "phys-data";
+ last_to = "chip-data";
+ phys = SIM_D10V_MEMORY_DATA + off;
+ if ((off % SEGMENT_SIZE) + nr_bytes > SEGMENT_SIZE)
+ nr_bytes = SEGMENT_SIZE - (off % SEGMENT_SIZE);
+ break;
+
+ case 0x10: /* in logical data address segment */
+ nr_bytes = sim_d10v_translate_dmap_addr (off, nr_bytes, &phys,
+ dmap_register);
+ break;
+
+ case 0x11: /* in logical instruction address segment */
+ nr_bytes = sim_d10v_translate_imap_addr (off, nr_bytes, &phys,
+ imap_register);
+ break;
+
+ default:
+ return 0;
+ }
+
+ *targ_addr = phys;
+ return nr_bytes;
+}
+
+/* Return a pointer into the raw buffer designated by phys_addr. It
+ is assumed that the client has already ensured that the access
+ isn't going to cross a segment boundary. */
+
+uint8 *
+map_memory (unsigned phys_addr)
+{
+ uint8 **memory;
+ uint8 *raw;
+ unsigned offset;
+ int segment = ((phys_addr >> 24) & 0xff);
+
+ switch (segment)
+ {
+
+ case 0x00: /* Unified memory */
+ {
+ memory = &State.mem.unif[(phys_addr / SEGMENT_SIZE) % UMEM_SEGMENTS];
+ last_segname = "umem";
+ break;
+ }
+
+ case 0x01: /* On-chip insn memory */
+ {
+ memory = &State.mem.insn[(phys_addr / SEGMENT_SIZE) % IMEM_SEGMENTS];
+ last_segname = "imem";
+ break;
+ }
+
+ case 0x02: /* On-chip data memory */
+ {
+ if ((phys_addr & 0xff00) == 0xff00)
+ {
+ phys_addr = (phys_addr & 0xffff);
+ if (phys_addr == DMAP2_SHADDOW)
+ {
+ phys_addr = DMAP2_OFFSET;
+ last_segname = "dmap";
+ }
+ else
+ last_segname = "reg";
+ }
+ else
+ last_segname = "dmem";
+ memory = &State.mem.data[(phys_addr / SEGMENT_SIZE) % DMEM_SEGMENTS];
+ break;
+ }
+
+ default:
+ /* OOPS! */
+ last_segname = "scrap";
+ return State.mem.fault;
+ }
+
+ if (*memory == NULL)
+ {
+ *memory = calloc (1, SEGMENT_SIZE);
+ if (*memory == NULL)